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ZL8802ALAFT Datasheet(PDF) 9 Page - Intersil Corporation |
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ZL8802ALAFT Datasheet(HTML) 9 Page - Intersil Corporation |
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9 / 91 page  ZL8802 9 FN8760.0 August 6, 2015 Submit Document Feedback PWM OUTPUT CHARACTERISTICS PWM Output Low 2mA sinking - - 0.5 V PWM Output High 2mA sourcing 4.25 -- V PWM Tri-state Input Bias Current (PWMH0, 1) VPWM = 2.5V - - 10 µA PWM Tri-state transition (always starts from LOW) 10pF max load 1 µs OSCILLATOR AND SWITCHING CHARACTERISTICS Switching Frequency Range 200 - 1334 kHz Switching Frequency Set-point Accuracy -5 - 5 % Minimum SYNC Pulse Width 50% to 50% 150 -- ns Input Clock Frequency Drift Tolerance Maximum allowed drift of external clock -10 - 10 % PMBus™ Clock Frequency (Note 12) 100 - 400 kHz POWER MANAGEMENT SOFT START/RAMP CHARACTERISTICS Ton-delay/Toff-delay Range Set using PMBus™ command 0 5000 ms Ton-delay Accuracy 2-phase ton delay > 4ms - +/-1 - ms Toff-delay Accuracy Set to immediate off -0/+1 ms Ton-rise/Toff-fall Duration Range Set using PMBus™ command (2-phase or 2-channel only) 0.0 100 ms Ton-rise/Toff-fall Duration Accuracy 2-phase or 2-channel only - ±250 - µs MONITORING AND FAULT MANAGEMENT INPUT VOLTAGE MONITOR AND FAULT DETECTION VDD/VIN UVLO Threshold Range 2.85 - 16 V VDD/VIN Monitor Accuracy Full Scale (FS) = 14V - ±2 - % FS VDD/VIN Monitor Resolution Full Scale (FS) = 14V - ±0.15 - % FS VIN UV Fault Response delay - 100 - µs INPUT CURRENT Input Current Sense Differential Input Voltage VIINP-VIINN 0 - 20 mV Input Current Sense Input Offset Voltage VIINP-VIINN -±100- µV Input Current Sense Accuracy % of full scale (20mV) - ±5 - % FS OUTPUT VOLTAGE MONITOR AND FAULT DETECTION VOUT Monitor Accuracy FS = VSET voltage (VOUT) -2 - 2 % FS VOUT Monitor Resolution FS = VSET voltage (VOUT) - ± 0.15 - % FS VOUT UV Fault Response Delay -10- µs OUTPUT CURRENT OUTPUT CURRENT SENSE RESOLUTION Low Range ±25mV Full Scale - 37.5 - µV Medium Range ±35mV Full Scale - 56.25 - µV High Range ±50mV Full Scale - 75.0 - µV OUTPUT CURRENT SENSE INPUT BIAS CURRENT VOUT Referenced ISENA0 or ISENA1 -100 - 100 nA ISENB0 or ISENB1 -25 - 25 µA OUTPUT CURRENT SENSE MONITOR AND FAULT DETECTION Output Current DCR Monitor Temperature Compensation Configurable via PMBus™ 0 12700 ppm/°C Electrical Specifications VDD = 12V. Typical values are at TA = +25°C. Boldface limits apply across the operating ambient temperature range, TA -40°C to +85°C (Continued) PARAMETER TEST CONDITIONS MIN (Note 14)TYP MAX (Note 14)UNIT |
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